Kerogen in aquifer material and its strong sorption for nonionic organic pollutants

Journal of Environmental Quality
Yong RanGuoying Sheng

Abstract

Sorption of organic pollutants by subsurface materials has been found to not only correlate with the total organic carbon (TOC) content, but also depend on the types of soil and sediment organic matter (SOM). Characterization of geochemically heterogeneous SOM is key to elucidating sorption mechanisms and predicting pollutant transport in ground water systems. In this study, kerogen, a nonextractable organic material, was isolated with an acid demineralization procedure from a sandy aquifer material (Borden, Ontario, Canada) having a TOC content of approximately 0.021% (w/w). Petrographical examinations reveal that the kerogen has three major types of macerals including bituminite (Kerogen Type I and II), vitrinite (Type III), and fusinite (Type IV or charred kerogen). The solid-state 13C nuclear magnetic resonance (NMR) spectrum shows two dominant peaks, aliphatic and aromatic carbons, for the isolated material. Sorption isotherms measured using phenanthrene, naphthalene, 1,3,5-trichlorobenzene (TCB), and 1,2-dichlorobenzene (DCB) as sorbates showed that both the isolated kerogen and the original sand exhibited nonlinear sorption and that the phenanthrene and TCB isotherms measured for the kerogen material are more nonlinear t...Continue Reading

References

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Citations

Jun 4, 2013·Environmental Science and Pollution Research International·Yong RanEddy Y Zeng
Feb 1, 2014·Water, Air, and Soil Pollution·Wojciech MrozikPiotr Stepnowski
Apr 25, 2012·Journal of Contaminant Hydrology·Indra KalinovichKathryn Thomas
Nov 29, 2005·Journal of Contaminant Hydrology·Nathan W HawsEdward J Bouwer
Oct 3, 2013·Chemosphere·Wojciech Mrozik, Justyna Stefańska
Apr 18, 2015·Journal of Contaminant Hydrology·L Shawn MatottRichelle M Allen-King
Aug 2, 2020·Water Environment Research : a Research Publication of the Water Environment Federation·Adedapo O Adeola, Patricia B C Forbes
Dec 21, 2016·Environmental Science & Technology·Lanfang HanBaoshan Xing
Apr 16, 2008·Environmental Science & Technology·Ke SunBaoshan Xing

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